NVIDIA GeForce 820M vs NVIDIA GeForce 9800 GTX
Graphics Processor
| GPU model | GF117 | G92 |
|---|---|---|
| GPU variant | N15V-GM-B-A2 | G92-420-A2 |
| Architecture | Fermi 2.0 | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 65 nm |
| Number of transistors | 585 million | 754 million |
| Die size | 116 mm² | 324 mm² |
Mobile graphics
| Release date | Nov 27th, 2013 | — |
|---|---|---|
| Generation | GeForce 800M | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | GeForce 700M | — |
| Successor | GeForce 900M | — |
Clocks
| GPU clock | 625 MHz | 675 MHz |
|---|---|---|
| Shader clock | 1250 MHz | 1688 MHz |
| Memory clock | 900 MHz 1800 Mbps effective | 1100 MHz 2.2 Gbps effective |
Memory Configuration
| Memory size | 1024 MB | 512 MB |
|---|---|---|
| Memory type | DDR3 | GDDR3 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 14.40 GB/s | 70.40 GB/s |
Render Configuration
| Shading units | 96 | 128 |
|---|---|---|
| TMUs | 16 | 64 |
| ROPs | 8 | 16 |
| SM count | 2 | 16 |
| Cache L1 | 64 KB (per SM) | — |
| Cache L2 | 128 KB | 64 KB |
Performance
| Pixel rate | 2.500 GPixel/s | 10.80 GPixel/s |
|---|---|---|
| Texture rate | 10.00 GTexel/s | 43.20 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | 432.1 GFLOPS |
| FP64 (double) performance | 20.00 GFLOPS (1:12) | — |
Dimensions & Outputs
| TDP | 15 W | 140 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x S-Video |
| Slot width | — | Dual-slot |
| Length | — | 267 mm 10.5 inches |
| Width | — | 111 mm 4.4 inches |
| Height | — | 38 mm 1.5 inches |
| Suggested PSU | — | 300 W |
| Power connectors | — | 2x 6-pin |
| Board number | — | P392 |
API Support & Features
| DirectX | 12 (11_0) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 4.6 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 2.1 | 1.1 |
| Shader model | 5.1 | 4.0 |
Other Features
Graphics Card
| Release date | — | Mar 28th, 2008 |
|---|---|---|
| Generation | — | GeForce 9 |
| Production | — | End-of-life |
| Launch price | — | 299 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 84 in our database |
| Predecessor | — | GeForce 8 |
| Successor | — | GeForce 200 |
